PLC & HMI Programmer (CODESYS Specialist)
Location: Bedfordshire – Hybrid (3 days office-based)
Employment Type: Permanent (Contract considered)
Salary: £45 000 - £65 000 DOE + Benefits
We’re looking for a skilled PLC & HMI Programmer to join a growing engineering team delivering bespoke control and automation solutions across diverse, high-tech industries. This role is ideal for someone who thrives on variety, enjoys solving complex technical challenges, and wants to see projects through from concept to commissioning.
You’ll be stepping into a pivotal position, ensuring ongoing delivery for high-profile projects and helping to drive forward exciting new work in areas such as EV systems, off-highway machinery, HVAC, agricultural technology, IoT, and cloud-connected solutions.
What You’ll Do
* Design, develop, test, and deploy PLC and HMI solutions using CODESYS V3.5 (structured text preferred)
* Work with a variety of communication protocols, including CAN-bus, Ethernet, and WebVisu
* Develop HMI screens – from simple interfaces to advanced visualisations
* Integrate external hardware (PLCs, I/O modules, controllers, GPS, displays)
* Commission control systems both onsite and remotely, troubleshooting and resolving integration issues
* Interpret functional specs, electrical schematics, P&IDs, and FMEA outputs
* Collaborate with engineers, project managers, and clients to deliver robust, reliable systems
* Document software logic, architecture, and configurations
* Provide technical expertise and training post-delivery
What We’re Looking For
Essential
* Strong PLC programming and/or Embedded C experience
* Proven track record with CODESYS 3.5 and IEC 61131-3 languages (ST, FBD, CFC)
* Experience with CAN-bus and Ethernet protocols
* Strong debugging, commissioning, and system integration skills
* Ability to interpret technical drawings and work across disciplines
* Clear, confident communication skills – comfortable working with colleagues and clients
Desirable
* Experience with CODESYS Automation Server, SoftPLC, or Safety
* Knowledge of EtherCAT, Modbus, OPCUA, MQTT
* AWS/cloud integration experience
* Exposure to functional safety standards (SIL, ISO 13849, IEC 61508)
* Advanced HMI design experience
Why Join
* Work across a variety of industries and cutting-edge projects
* Hybrid working – 3 days in the office, 2 days remote
* Minimal travel (occasional client site visits)
* Small, highly skilled engineering team with strong collaboration
* Competitive salary and benefits package
* Professional development opportunities and hands-on project ownership
Interview Process
* Initial screening call
* Online technical interview (peer-to-peer)
* Final face-to-face interview at our Bedfordshire office
For more information and immediate consideration, apply today.